Awhile back I saw a member talking about how it took two gallons of fuel
to get his Saito broken-in to where he could get it to idle. This is a case
where the Guy started the engine about 4 turns out on the main, the low
speed factory set way too rich....left the glow starter on and just let the
engine run like that, slobbering rich beyond belief, probably tank after tank,
thinking he was doing his motor good. If he would have removed the glow
starter the engine would have drowned-out and quit.

What really happened was, he glazed the cylinder, and the compression
was so low, the thing wouldn't hold an idle. His cure then was to run the
engine for hours and hours....gradually leaning the engine out a click or
so at a time, until the engine reached a point where the temperature got
high enough, the RPM's got high enough, and the cylinder pressure got
high enough, and the ring was able to gradually scrape away the glaze,
and get to some respectable semblance of compression where the
engine would idle.

Would you by a new Honda generator and have the mechanic adjust
the carb so the engine ran sloppy rich, only about half the proper RPM
....so you could get a "good break-in" ? How about a chain saw ?

Would you buy a new motorcycle and have the mechanic do the same thing ?
How about an automobile ? Why then your aero-model engine ? Like William R.
stated, all engines are basically the same, made from the same materials.
This sloppy rich "ringed engine break-in thing" is absolutely preposterous. It
has no basis in practicality , practice, or fact. It is a stupid, incorrect Internet
Tale.

The correct way to operate a ringed engine on break-in is to allow the
engine warm up for a moment, at 1/4 throttle, then run it up to full RPM, and
adjust the engine about 500 rpm's down from full lean, and let it run for a
few minutes. Occasionally peak the engine to full RPM for about 20 seconds,
then go back to the slightly rich position. After 5 minutes, shut the engine
off and let it cool for about 20 minutes. Do the same three more times, a total
of twenty minutes, with about 5 of those minutes running at full peak.

The engine is sufficiently broken-in, will idle correctly, and will run perfectly.

FBD.